Door.



J. E. OGDEN @I C. C TOMKINSON.

DOOR.

APPLICATION FILED SEPT. zo` Isle.

Patented Aug. 13, 1918..

4 SHEETS-SHEET l.

Figa

y// e II-riff 21 *By f 5% TR/Vy DOOR. APPLlcAHoN man sLPl.2o, |916'.

Patented Aug. 13, l1918.

4 SHEETS-SHEET 2: F1

A TTURNE Y' I'. E. OGDEN & C. C. TOVMKINSON.

nooR. APPLICATION FILED SEPI. 20. |916.

` JOHN EDWARD OGDEN,

UNITED STATES PATENT OFFICE.

oF'MoUNTAN-VILLE, NEW Yoax, AND CHARLES c. 'romxmsom F PLAINFIELD, NEW JERSEY; SAIDWOMKINSON ASSIGNOB -TO SAID OGDEN.

Doon.

apliieation med september 2o, 191e.

` United States, and a Be it known that we, JOHN nEN,-a citizen of the United States of America, and a resident of Mountalnville, Orange county, and State of New York, and CHARLES C.ToMx1NsoN, a citizen of the resident of Plainfield, Union county, and State of New Joersey, have invented certain new and useful provements in Doors, o f which the following is a specificatiom'reference being had t0 the accompanying' drawings, forming a part thereof.

Our inventin relates to doors for pierl sheds, warehouses andthe like, and hasjfor one object to provide a door of this character that shall be adapted to swing overhead .in opening with a minimum floor clearance.

Another object is to provide means for supporting the weight in its open position when it is substantially horizontal, but also in is intermediate positions as it is being opened or closed.

Another object is to provide a mechanism foi* doors of the'character above indicated, that shall serve not only to open door, but also tov support the other means in all positions of the door.

Inorder that our invention may be thor oughl understood, we will now proceed to descri e the same in thefollowing specicaf tion and then point out the novel features thereof in appended claims.

Referring to the drawings:

Figure 1 is a sectional elevation of a door arranged and constructed with our invention.

Fig. 2 is -a view correspondin except that the position. Fig. 3

to Fig. 1 door' is shown 1n its open the line 3-3 of Fig. 1, and

Fig. 4 is a view corresponding toFig. 1, of a slightly modified arrangement which also embodies our inventi n.

Another modification o our invention is shown in Figs. 5 and 6 which correspond respectively to Figs. 1 and 2. v

.'Fig. 7 shows a slight variation of the structure ,of Fig. 5, andis also a sectional elevation.

Figs. v8, 9 and 10; Figs. 11, 12 and 13; and Figs. 14, 15 and 16 correspond respec- Specication of Letters Patent.

- tively to Figs. 5, 6 EDWARD Oc.-A

- figures.

26 connectingthe elevating ofthe door not only with guide hoisting e opened. stationary in accordance is a sectional plan view, taken on tion as clearly shown in Fig. 1.

' Patented Aug. 13, 191s. .serial No. 121,106.

and 7 and each of these groupsof figures shows sectional elevations with the door closed and opened, of one structure, and an elevation with the door closed, of a slightly modified structpr'e.

Corresponding parts are designated by the same reference characters in all the iigures.

. The invention is to a single sectlon door in theremalning Referring rst to Figs. 1, 2 and 3, 20 designates the wall of a building in which are hollowreinforced concrete beams 21 and a door opening 22 Ahaving a lintel 23 and adapted to be closed by a dooi` having an ppper section 24v and a lower section 25. The door is provided with a hoisting mechanism chains 27 to brackets or arms 28 near the respective lowei` corners of .the bottom door section 25'.

The upper door section 24 is provided section 25 slides when the door is being At the sides of the door opening, guideways 30 are providedA to receive the lower section when the door is closed and' the sections are only slightly` overlappedfas shown in ing chains 27 extend over suitable sheaves 31 in the usual manner to counterweights 32.

'tutes a convenient means for actuating the same. The counterweights are preferably disposed in the h olr low beams 21 as'clearly-shown in Fig. '3. At a considerable distance abovev theV door opening on the wall 2() is a sheave'34 mounted in stationary brackets 35 andthere are a pair of sheaves 36-37 secured near the edge of the upper section 24 of the doer, one pulley being located neartheupper corner of the upper section,

mediate point in the length of the vdoor sec- There is an endless chain or flexible cord 38 extending over the pulleys 36-37 and over the support' g sheave r34.

' The operation of opening the door lisasn 27 are raised bythe l hoisting mechanism torst raise the laitier' follows: The'chains door section into the guidesv 29. Its' movement relative tov the upper door section 1s limitedI y 'some suitable means so shown as applied to-twosection doors in'Figs. 1 to 4 inclusive, and I channels 29 in which the lower' .I

Eig. 1. The heist- The hand chain 33 depends from the hoist- N ing mechanism and const and the other vat an inter-V the same vand is 'andthe sheave 4,8,on spacedabove diejbracket 50.

that the continued movement of the hoistingl chains will cause the lower edges of both door sections to move upward vertically. The door sections are then free to swing inwardly to the extent permitted by the length of the chain 38, until they have reached their fully opened position.

hThe arrangement of parts is such that t e sion and serves to support the door as it moves from its closed to its open position, and in its open position.

The oounterweights must be of approximately the same weight as that of the lower door section and obviously are insufiicient for supporting the entire weight of the two door sections when they are open and in the arrangement of our invention they only support a part of the weight, the remainder being borne by the chain 38 under these conditions.

Attention is particularly directed to the fact that by this arrangement the chain or cord is never slack and always performs its function in assisting the counterweight to support the door. In closing theoperation is reversed. IVhen the support of the hoisting chains is removed from the upper door section it will-hang on the chain 38 and as the sheave 37 which sustains this weight is oii'set inwardly from the plane of the door opening it will cause the upper edge of the upper door section to seat against the lintel 23.

It is desirable, particularly for relatively wide doors, to provide a supporting chain 38 and sheaves 34, 36 and 37 at each lateral edge of the door, but the foregoing description will suiiice for either a single or a double arrangement.

Instead of the sheaves 36 and 37 and the chain 38, a chain 41 may extend over the pulley 34 and be attached to the upper door section near one of its edges as shown in Fig. 4, the respective ends of the chain 41 being connected to a point near the top and to an intermediate pointfin the length of the upper section.

ferring now to Figs. 5 and 6, our invention is applicable to a single section as well as a two-section4 door, and in fact may be utilized with doors having one or more sections.

A single section door is here designated 44 provided with sheaves 45 and 46 which correspond to sheaves 36 and 37, and

are secured to its lateral edge.

Instead of the single fixed sheave 34, we provide in this arrangement two sheaves 47 and 48 which are located substantially in plane as the pulleys 45 and 46. v47'is mounted on a bracket50 't relatively close to the wall 20 a bracket 51'which is The endless chain or cable is always in ten- In the arrangement of Figs. 1 to 4 inclusive, the fiexible chains 38 and 41 have a triangular form while the arrangement of lFigs. 5 and 6 produces 'a quadrilateral figure exceptwhen the door is closed. A continuous chain o1' cable 42 extends over the sheaves 45-.46`47-48 and supports the door as it moves from its closed to its open position, and in its open position, as shown in Fig. 6.

By properly positioning the sheaves 47 and 48 and spacing the sheaves 45 and 46, the 'chain or flexible cable will be of the proper length for both the open and closed positions of the door, and the necessity for a stop is'avoided. y

The distance between the sheaves 47 and 48 has no shortening effect upon the chain when the door is in its closed position'but has a material shortening effect upon the chain when the door is in its open position, which eiect may be increased by increasing the distance between these sheaves 47 and 48.

As shown in Fig. 7, the sheaves 47 and 48 may be replaced by brackets 52 and 53 to which the respective ends of the chain 43 are attached. The chain extendsover the sheaves 45 and 46 as in the arrangement of the previous figures and the operation of the door is substantially the same in both cases. The arrangement of Figs. 5 and 6 has the advantage that wear on the chain or cable, is more evenly vdistributed andfurthermore, the friction which opposes the opening and closing of the door is reduced.

bracket 53.

` In Figs. 8 and 9 the one-section door-44 is'provided with a pair of sheaves 54-55 which are relatively close together and near the center of the door at its edge. Above the door opening is a sheave 56, and an endless vchain or cable 57 extends over the sheaves.

The sheaves and chains are preferably arranged in duplicate on their respective edges of the door in all of the modifications.

As shown in Fig. 10, the sheaves 54-55 may be omitted and a chain 58 substituted for the chain 57, the respective ends of the chain 57 being affixed to the door at points 59-60 corresponding in location to ,the sheaves 54-55. Y

In Figs. 11 and 12 another modication of our invention isillustrated, according to which a sheave 61' is mounted outside of the plane of the door, and a sheave 62 considerably above the door opening and substantially in the plane `of the door. The sheaves 5455 'are used as in the previous. figures. This arrangement has the advantage of more effectively supporting the weight of the door through the chain 63 which extendsv around the pulleys. In Fig. 13 the sheaves 61 and 62 are removed and the respective ends of a chain 64 is affixed Aat points which correspond in location to these sheaves.

I In Figs. 14 and 15 a suspension arrange-- .1 not suiiiciently high to maintain a fixed length of chain for all positions of the door.

The operation however, is made; substanf tially the same as the arrangement of Figs. 1 and 2,. by the use of a pair of stops 69 and 70 ,which are both vlocated 'between the.

sheave 67 and the sheave 66. These stops limit the freedom of movement of the chain and allow one section of the chain to be under tension while the other section between the stops may be slack.

In the arrangement illustrated, there is considerable slack in the section of the chain between stops when thedoor is closed and this slack-is taken up when-the door is open.

Instead of the sheaves 65 and 66 the ends of the chain may be aiiixed to the door at corresponding points 71 and 72 as shown in Fig. 16 in which-case asingle stop`69a isv I required if apart of the chain is to be slack during a part of the operation.

We have not shown a vhoisting mechanism in any of the modifications except that of Figs.- 1, 2,. and 3,' because Amechanisms of this character are well known.

' Various modifications may be made within the spirit and 'scope of. our invention and weintend that only such limitations beimposed as are indicated lin the appended claims.

What we claim is:

1. The combination with a frame having a door opening, of a door having a verti-' cally guided pivotal axis, hoisting mechanism connected to the door near its pivotal axis operating to exert a pull in the vertical 'plane of movement of said axis, a freely rotatable sheave afxed abovethe door opening, and a flexible supporting member in-v dependently of the hoisting mechanism extending over the sheave and connected'with the door at more thanone point above said pivotal axis.

2. The combination with a frame having a door opening, of a door having a vertically guided pivotal axis, hoisting mechanism connected to the door near its pivotal axis, operating to exert a pull in thevertical plane of movement of said axis, a freel;r

-and thespac'ed sheaves on the door.

a hoisting mechanism connected to the door..

rotatable sheave afiixed above the door opening, a'pair of spaced sheaves mounted upon the door and a flexible supporting'membcr indepen ent of the hoisting 'mechanism extending over the fixed sheave on. the frame 3. The combination with a frame having a door opening, of a doorhaving a verti-v. cally guidedpivotal axis, means .for v ertically guiding the door near its lower end, 75

n'ear the bottom operating to exert a pull -in 'the vertical plane of movement of said axis, a-freely rotatable sheave affixed .above the door opening, and aflexible supporting member independent-of the hoisting mechanism 'extending over the sheave and connected to spaced points above the. bottom of the door one of, which is n'ear the 'upper end of the door. f

. t 4. vThe combinationI with a frame having f a door o ening, of a door having a vertically gui ed pivotal axis, means for verti` cally guiding the` door near its lower end, a

hoistin mechanism connected to the door near the bottom operating to exert a pull in the vertical plane of movement of said axis, a freely lrotatable sheave aiiixed above the door opening, a sheave mounted on the doorv near the top, a second` sheave mounted on the -Idoor atan intermediate point, and a exible member extending over the aforesaid sheaves and arranged to support the upper-endof the vdoor in its intermediate and open positions.

5. The combination-with a frame having a door opening, of adoor having an 'upper and a lower section, guideways on the upper section for the lower section, means'for vertically guiding the lower end of the bottom section, hoisting means connected4 to the lower end of the bottom section o erating to exert a vertical pull thereon, al reely rotatablev sheave aflixed abovethe door opening,

anda iexible member extending over the tically guiding the'lower end of the 'bottom 120 section, hoistingf means connected to the lower end of the bottom section operating to exert a vertical pull thereon, a freely rotatable sheave affixed above the door opening,` and a flexible member extending over the sheave and connected tovertically spaced Vpoints on the kup er door section above the lower end thereo one of which is vnear the l upper end of said upper doorsection.

7 The combination witha frame hav-ings. 130

door opening, of a door having an upper and a lower section, guideways on the upper' sect-ion for the lower section, means for vertically guiding the lower end ot' the bottom section, hoisting` means connected to the lower end of the bottom section operating to exert a vertical pull thereon. a freely rotatable sheave affixed-above the door opening, and a flexiblemember extending over the aforesaid sheave and connected with the upper door section at two vertically spaced points materially above the lower end thereof and arranged to support the upper end of the door in its intermediate and open positions.

8. The combination with a frame having a. door opening, of a door having a vertically guided pivotal axis, connected to the door near its pivotal axis operating to exert a pull in the vertical plane of' movement of said axis, and a flexible supporting member independent of the hoisting mechanism connected to one or more fixed points above the door opening andjto a plurality of vertically spaced points on said upper door section materially above the lower end thereof, so arranged that the flexible member is adapted to support the upper end of the door in its intermediate and'open positions.

9. The combination with a frame having a door opening, of a door having a vertically guided pivotal axis, a freely rotatable sheave 'affixed above the door opening, a flexible member extending over the sheave and with its ends connected to the doo: at vertically spaced points thereon, and av stop ailixed to said flexible member and a fixed abutment for said stop.

10. The combination With a frame having a door opening, of a door having a vertically guided pivotal axis, a bracket afiixed above the door opening, a'sheave rotatable therein, a flexible member extending over the sheave and with its ends connected to the door at vertically' spaced points thereon, said flexible member being of greater length than the combined distances from said points of attachment to the sheave, and a stop affixed to said flexible member and arranged to engage said sheave bracket when the door is in closed position.

11. The combination with a frame having a door opening, of a door having a vertihoisting mechanisma door opening,

cally guided pivotal axis, a freely rotatable sheave afiixed above the door opening, a pair of' spaced sheaves mounted on the door, a flexible member extending over the fixed sheaves on the frame and the spaced sheaves on the door, and a pair of spaced stops on the flexible member between the 'fixed lshea ve and one of the door sheaves.

12. The combination with a frame having a door opening, of a door having a vertically guided pivotal axis, a freely rotatable sheave aliixed above the door opening,` a pair of spaced sheaves mounted on the door, a flexible member extending over the fixed sheaves on the frame and the spaced sheaves on the door, and a pair of spaced stops on the flexible member betweensthe fixed sheave and one of the door sheaves, the fixed sheave being so arranged that -the entire flexible member is in tension when the door is open and so that a portion of the member is in tension when the door is closed.

13. The combination with a frame having a door opening, of. a door adapted to swing away from the door opening at the top, hoisting means connected with the bottom of the door, a plurality of spaced members above the door operating to exert a vertical pull thereon opening in substantial alinement vertically, and a flexible member extending over said members and connected to the door at spaced points above the bottom of the door.

- 14. The combination with a frame having of a door adapted to swing away from the door opening at the top, .a plurality of freely rotatable spaced pulleys above the door opening in substantial alinement vertically, a exible member extending over they pulleys and connected to the door at spaced points above the bottom ofthe door, and a hoisting mechanism independently connected to the door near the bottomy operating to exert a vertical pull thereon.

In wit-ness whereof, we have hereunto set our hands this 18th day of September, 1916.

JOHN EDWARD OGDEN. CHARLES C. TMKINSON. 

